Conceptual Physical Science (6th Edition)
Verified Answer ✓
6 ; On the left-hand side there are three ... more
Verified Answer ✓
; In an ammonia molecule there are hydrogen ... more
Verified Answer ✓
; Mass of the red jelly beans is The ratio of ... more
Verified Answer ✓
Yes ; The composition of the reactants should be ... more
Verified Answer ✓
Yes ; Since the carbon is in excess, the extra ... more
Verified Answer ✓
18 g/mole ; The formula mass of water is 18 amu... more
Verified Answer ✓
6.02 x 1023 lithium atoms ; Since the atomic mass ... more
Verified Answer ✓
water molecules ; Since the formula mass of water... more
Verified Answer ✓
The combustion takes place at a faster rate. ; ... more
Verified Answer ✓
Refrigerator. ; As the temperature decreases the ... more
Verified Answer ✓
By providing an alternate pathway for the reaction... more
Verified Answer ✓
No ; Covalent bond is the bond involving sharing ... more
Verified Answer ✓
An exothermic reaction emits heat energy and ... more
Verified Answer ✓
Increase in entropy ; The entropy change for a ... more
Verified Answer ✓
Living organisms store energy in chemical form, ... more
Verified Answer ✓
To balance an equation the coefficients are used. ... more
Verified Answer ✓
6 ; The oxygen molecule O2 on the right side of ... more
Verified Answer ✓
The mass on the left side of the equation must be ... more
Verified Answer ✓
Changing the subscript changes the compound. ; ... more
Verified Answer ✓
Golf ball and ping pong ball have different ... more
Verified Answer ✓
The atomic masses of oxygen and carbon are ... more
Verified Answer ✓
30 amu ; Nitrogen monoxide consists of one ... more
Verified Answer ✓
One mole marble contains marblesTwo moles of ... more
Verified Answer ✓
; When the mass of a given compound is equal to ... more
Verified Answer ✓
water molecules ; Mole is a measure of the amount... more
Verified Answer ✓
One mole of molecules is equal to Avogadro number ... more
Verified Answer ✓
16 amu ; One atomic mass unit is equal to one ... more
Verified Answer ✓
When reactants collide with an energy equal to or ... more
Verified Answer ✓
The rate of the reaction generally increases with ... more
Verified Answer ✓
Reactant molecules with greater kinetic energy, ... more
Verified Answer ✓
Activation energy ; Activation energy is the ... more
Verified Answer ✓
Chlorine atom ; In the atmosphere, a chlorine atom... more
Verified Answer ✓
A catalyst provides an alternate path for the ... more
Verified Answer ✓
Catalysts remain unchanged after the reaction. ; A... more
Verified Answer ✓
A catalyst lowers the activation energy and speeds... more
Verified Answer ✓
; The bond energy is ; therefore, an energy of ... more
Verified Answer ✓
Releases energy ; A reaction is exothermic when ... more
Verified Answer ✓
Absorbs energy ; The total bond energy of ... more
Verified Answer ✓
Energy is converted from one form to another form... more
Verified Answer ✓
The entropy is always increasing. ; The entropy is... more
Verified Answer ✓
An exothermic reaction releases and spreads energy... more
Verified Answer ✓
Exothermic reaction ; During lightning, an ... more
Verified Answer ✓
Rate of a reaction increases with the ... more
Verified Answer ✓
Adding hydrogen peroxide to a glass containing ... more
Verified Answer ✓
Exothermic process. At the molecular level, water ... more
Verified Answer ✓
The temperature of the cup containing the salt ... more
Verified Answer ✓
The number of carbon atoms in pure diamond is... more
Verified Answer ✓
; The number of atoms in gold is .Calculate the... more
Verified Answer ✓
The mass of one mole is . ; Calculate the mass of... more
Verified Answer ✓
; The number of moles of produced is indicated ... more
Verified Answer ✓
is produced from ; of give of .Hence, of ... more
Verified Answer ✓
; There are 3 carbon atoms, 8 hydrogen atoms and ... more
Verified Answer ✓
water propene ; Consider the chemical reaction ... more
Verified Answer ✓
; It can be observed that 1 mole of and 2 mole ... more
Verified Answer ✓
Both the reactions are exothermic ; For the ... more
Verified Answer ✓
Verified Answer ✓
Mass of one mole vanadium is , therefore number of... more
Verified Answer ✓
Since the reaction is endothermic, it has lesser ... more
Verified Answer ✓
Bond energy of bond is ; Bond energy of bond is... more
Verified Answer ✓
The card temperature is , temperature difference ... more
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
Both are balanced equations ; In the first ... more
Verified Answer ✓
2 diatomic molecules ; Two diatomic molecules are ... more
Verified Answer ✓
This is a product molecule, not a reactant. ; From... more
Verified Answer ✓
The chemical symbols of the atoms obtained from ... more
Verified Answer ✓
; Water is the molecule with three atoms and ... more
Verified Answer ✓
; It can be observed that the diatomic molecule ... more
Verified Answer ✓
Both have the same number of atoms, atoms in both... more
Verified Answer ✓
Verified Answer ✓
Verified Answer ✓
18 amu ; A molecule of water consists of two ... more
Verified Answer ✓
; A water molecule consists of two hydrogen atoms... more
Verified Answer ✓
Not possible ; It is not possible since the given ... more
Verified Answer ✓
; Molar mass of one hydrogen molecule is and ... more
Verified Answer ✓
69.78 g of gallium74.92 g of Arsenic ; The given ... more
Verified Answer ✓
; The given sample of gallium arsenide, is one ... more
Verified Answer ✓
Fuel reacts with oxygen which is obtained from the... more
Verified Answer ✓
Endothermic reactions need energy, whereas ... more
Verified Answer ✓
Delays the spoilage. ; Food contamination is ... more
Verified Answer ✓
Only the greater concentration of oxygen make the ... more
Verified Answer ✓
To provide the activation energy needed for ... more
Verified Answer ✓
Photosynthesis capable organisms produce majority ... more
Verified Answer ✓
The ozone produced from automobile will not last ... more
Verified Answer ✓
Majority of HCl dissolves in water. ; Majority of ... more
Verified Answer ✓
Nitrogen monoxide. ; Two mole nitrogen monoxide (... more
Verified Answer ✓
The discharging of a disposable battery is an ... more
Verified Answer ✓
Exothermic reactions are less favored in a ... more
Verified Answer ✓
Entropy increases. ; Following the given chemical ... more
Verified Answer ✓
The activation energy of burning a wood is higher ... more
Verified Answer ✓
Entropy can predict the spontaneity of a reaction... more
Verified Answer ✓
Exothermic reactions results in a disperse of ... more
Verified Answer ✓
When the temperature of the hot pie and the ... more
Verified Answer ✓
Water molecules can disperse much more when they ... more
Verified Answer ✓
The law of entropy states that for an isolated ... more
Verified Answer ✓
The ozone produced near the surface of earth may ... more
Verified Answer ✓
Sixth mass extinction event has been mainly caused... more
Verified Answer ✓
Four P4 molecules on the left hand side means 16 ... more
Verified Answer ✓
Mass of an oxygen atom alone is 16 amu, therefore ... more
Verified Answer ✓
The given sample is one mole nitrogen which has ... more
Verified Answer ✓
Molar mass of aspirin is 180 g, and in one mole ... more
Verified Answer ✓
As the temperature increases number of molecules ... more
Verified Answer ✓
Since the rates of the reactions differ a lot, ... more
Verified Answer ✓
Ozone decomposes to oxygen and chlorine catalyses ... more
Verified Answer ✓
Ultraviolet light is needed for the formation of ... more
Verified Answer ✓
Formation of ammonia is an exothermic reaction, ... more
Verified Answer ✓
Energy disperse through vacuum as heat and ... more